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Proceedings Paper

Third-order optical nonlinearities of Ag nanoparticles fabricated by two-step ion exchange in glass
Author(s): J. Rönn; L. Karvonen; S. Kujala; A. Säynätjoki; A. Tervonen; S. Honkanen
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Paper Abstract

We present third-order optical nonlinearities of Ag nanoparticles fabricated using a two-step ion exchange method. The nonlinearities are studied using the well-known Z-scan technique. In our experiments, we use a Ti-Sapphire laser source operating at 800 nm, which is far from the resonance of the Ag nanoparticles. The nonlinear refraction of these nanoparticles is studied using the closed aperture configuration of the Z-scan method. Contrary to expectations from previous studies for similar-sized nanoparticles, our nanoparticles possess positive nonlinear refractive index. The estimated nonlinear refractive indices are in the range of 10-12 cm2/W.

Paper Details

Date Published: 16 May 2012
PDF: 7 pages
Proc. SPIE 8434, Nonlinear Optics and Applications VI, 84341K (16 May 2012); doi: 10.1117/12.922224
Show Author Affiliations
J. Rönn, Aalto Univ. (Finland)
L. Karvonen, Aalto Univ. (Finland)
S. Kujala, Aalto Univ. (Finland)
A. Säynätjoki, Aalto Univ. (Finland)
A. Tervonen, Aalto Univ. (Finland)
S. Honkanen, Aalto Univ. (Finland)
Univ. of Eastern Finland (Finland)

Published in SPIE Proceedings Vol. 8434:
Nonlinear Optics and Applications VI
Benjamin J. Eggleton; Alexander L. Gaeta; Neil G. Broderick, Editor(s)

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